Roll winder



P 1960 A. M. BOJANOWER 2,954,182

ROLL WINDER Filed Nov. 9. 1959 7? MS. I zgi .HLBERTM Barn/v0 WEE l N VENTOR ATTO'R N EYS United States Patent ROLL WINDER Albert M. Bojanowe'r, 5270 E. Washington Ave., Los Angeles 22, Calif.

Filed Nov. 9, 1959, Ser. No. 851,817

4 Claims. (Cl. 242-129.6)

The invention relates to roll winders and has particular reference to a releasable mounting for the shaft of a roll which is designed to support relatively heavy loads. The device has special utility in the paper industry, for example, where heavy loads of sheet material such as printed paper weighing from fifty to five thousand pounds must be wound upon a center shaft for storage and shipment.

The problem of rewinding paper has beenprevalent in the paper industry for many years. Sundry devices have been resorted to identify commercially as centershaft rewinding machines, and drum type rewinding machines. Both of these devices have been commonly used for rewinding or rerolling the processed web of paper or other sheet material and have employed principles which have been considered basic. The centershaft rewind, which is of primary concern herein, has heretofore been constructed as a single station or as a multiple station in vertical or horizontal disposition wherein the shaft is mounted on rotating support arms in such fashion that the shaft can be driven in order to wind the web about its perimeter.

For rewinding operations the rolls are coupled to a power source. Heretofore, in order to cope with the load demand and the driving capacity, square or rectangular rolls have generally been used to couple the shaft to the power or brake source. These rolls have generally necessitated use of an outboard bearing since it is difiicult to make good fits on square driving surfaces with the square driver. Unless an outboard bearing is used, the driving surface becomes a load-carrying surface. Wear inevitably occurs and as wear takes place, the roll has become loose and subject to bouncing from side to side of the chuck as rotation continues. The structure made reference to has been complicated and cumbersome, as well as inefiicient.

- It is therefore among the objects of the invention to provide a new and improved rewind device which makes use of a cylindrical shaft or roller and in which no outboard bearing is required.

Another object of the invention is to provide a new and improved rewind device which features a releasable chuck which when opened permits the load to be hoisted directly from the open chuck.

Another object of the invention is to provide a new and improved rewind device which features a releasable chuck constructed in such fashion that the chuck can be opened and closed Without tools and without the necessity i the roll.

Figure 3 is a longitudinal sectional view of the same releasable connection but with the retaining ring shifted to released position. t

Figure 4 is a right end elevational view taken on the line 44 of Figure 2.

I Figure 5 is a cross-sectional view taken on the line 5--5 of Figure 2.

Figure 6 is a partial right end elevational view showing the'jaw lifted to permit removal of the shaft.

In the embodiment of the invention chosen for the purpose of illustration there is shown a supporting surface 10 which may, for example, be a concrete floor, on

which are mounted side elements 11 and 12 of an appropriate frame 13 which are positioned so as to support a I I rewind shaft 14. As shown, the shaft is supported upon the side elements by the employment of retainers 15 and 16. As shown the roll has a bundle of web material 17 wound thereon and the load may be considered as ready for removal.

therein which fits in a complementary keyway' 22 in.

the stub shaft 18. Set screws 23 are provided to anchor the key in position. A bearing ring 24 may be employed to bear against the side element 12. A bore through the collar accommodates the stub shaft 18.

At theright-hand end of the collar, as viewed in Figures 2 and 3, there is provided a shelf 26 which has a semi-V,

cylindrical interior surface 27 in which a bushing 28 on a rewind shaft 29 is adapted to fit. An aperture 30 in the shelf accommodates a plug 31 on the rewind shaft so that when. it is in position the rewind shaft is nonrotatably connected to the stub shaft 18.

Superimposed over the shelf 26 is a chuck jaw 35 whichv is also provided with a semi-cylindrical interior surface 36 complementary to the surface 27 and which is adapted to be clamped down upon the upper side of the bushing 28 when in the closed arrangement shown in Figures 2 and 4 a bracket 37 on one upper face 38 of the shelf accommodates a pivot pin 39 by means of which the chuck jaw is pivotally secured in position so that it can,

' be swung between the positions of Figures 4 and 6.

On the outside of the shelf 26 is a semi-cylindrical exterior surface 40 which is of the same radius of curvature as a semi-cylindrical exterior surface 41 of the chuck jaw 35. When the chuck jaw is closed in the positions of Figures 2, 3 and 4, the surfaces 40 and 41 comprise a single cylindrical surface for reception of a retainer ring- 42. The collar 19 is also provided witha cylindrical exterior surface 43 of precisely the same radius of curvature as the surface 40 and in essence a continuation of that surface; The retainer ring has an interior cylindrical 3 bore 44 which fits over the surfaces 40, 41 and 43 with a sliding fit so that it can be shifted between the positions shown in Figures 2 and 3 by sliding axially.

To hold the ring in one or another of the two positions there is employed a spring-pressed detent: comprising a ball. 45: urged by a spring 46 into its operating position; An: adjusting screw 47' threadedly mounted in an appropriate aperture 48 can be manipulated'to effectively'adjust the spring action. In the collar on one sideof the exterior cylindrical surface 43 is a semi-spherical recess 49' which is adapted to receive the ball 4'4; A channel 5% connected to the recess extends endwardly from left to right, as viewed in Figure 2, so that the ball can be slid along the channelwh'en forced out of the recess 49?: In the exterior surface 40 is a portion 51 of a similar recess and in the surface 41 is a corresponding portion 52. These portions are interconnected by sections 53- and 54, respectively, of a channel withthe channel 50 so that when the ball is slid out of the recess 49 alongthe channel 50 and channel sections 53; 54, it may be passedreadily into a position where the ball can be resiliently urged into the combined recesses 51 and 52, thereby to hold the retainer ring 42 in closed position overthe chuck jaw 35, as illustrated in Figure 4.

In operation when the device is in released position, the retainer ring 42 will be slid into position over the collar 19, as viewed in Figure 3, Where it is brought to a stop by engagementwith the bearing ring 24. In this position the ball45 is pressed into the recess 49 to retain the ring in that position. With the ring removed'as' described, the chuck jaw 35'can be lifted to the position illustrated in Figure 6 and beyond in order to permit removal of the bushing 28 and the rewind shaft 29. When the rewind shaft is to be locked in position, the bushing is lowered from the position of Figure 3 to the position of Figure 2 until it bears against flanges 55 and 56, respectively, on the shelf 26 and chuck jaw 35. In thisposition the ball 45 is spring urged into the recess portions 51 and 52so-that the ring is firmly held in this retaining position. As has been previously described, the plug 31 positioned asshown in. theaperture 30 non-rotatably connects the rewind shaft with the stub shaft 18 so that when the stub shaft 18 is driven, the rewind shaft will also be driven so as to roll up the web upon itself.

From the foregoing description it will be understood and appreciated that the chucking arrangement is one of obvious simplicity inasmuch as it does not necessitate any more than a hand operation to shift the retainer ring 42 from one position to the other. All parts remain expressly attached'to the device and in a handy and convenient 'position ready for immediate manipulation. Ample bearing surfaces are provided both for supporting the load on the rewind shaft and in a thrust or endwise direction to minimize endwise movement. The arrangement of parts, moreover, is of such character that no binding takes place and the device can be readily adjusted to releaseposition and to locked or operating position whenever'needed.

While the'invention has herein been shown and described in what is conceived to be'the most practical and preferred embodiment, it is recognized that departures may be made therefrom within the scope of the invention, which is not to be limited to the details disclosed herein butis to be accorded the full scope of the claims so as-to embrace any and all equivalent devices.

Having described the invention, what; is claimed as- 4' a shelf on the collar having a semi-cylindrical interior surface for reception of one" end of said main shaft, means securing said main shaft non-rotatably to said stub shaft, a chuck jaw movably secured to the shelf, said chuck jaw having a semi-cylindrical interior surface complementary to the first semi-cylindrical surface, said chuck jaw being movable to a closed position overlying said shelf, said shelf and said" chuck jaw having complementary semi-cylindrical exterior surfaces forming in conjunction with each other a cylindrical surface when the chuck jaw is closed, said collar having a cylindrical exterior surface of the same diameter as the first cylindrical surface and in axial alignment therewith and a retainer ring having a released position on said collar and movable axially to a releasableretaining position surrounding said shelf and said chuck jaw.

2. In a device for holding rolls of sheet material, a frame, a main shaft having ends of circular cross-sectional shape, and rotatable retention means on the frame at each end of saidmain shaft'holding said main shaft rotatably on the frame, one of said'retention-means comprising a stub shaft rotatably'mounted-on the frame, a collar nonrotatably secured to the stub shaft, a shelf on the collar having asemi-cylindrical interior surface for reception of one end of said main shaft, means securing said main shaft non-rotatably to said collar, a chuck jaw having one end pivotally'secured' to'the shelf, said chuck jaw having a semi-cylindrical interior surface complementary to the first semi-cylindrical surface, said chuck jaw being movable to a position overlying-said shelf, said shelf and said chuck jaw having complementary semi-cylindrical exterior s'urfaces forming a cylindrical surface when the chuck jaw is closed, said collar having a cylindrical exterior surface of the same diameter as the first cylindrical surface and in axial alignment therewith, a retainer ring having a released position on said collar and movable axially to a releasableretaining position surrounding said shelf and said chuck jaw, and resilient detent means operatively associated with said retainer ring, said collar, said shelf and said chuck whereby to hold said retainer ring alternatively in released and retaining positions.

3. In a device for rewinding' rolls of sheet material, a frame, a rewind'shaft of circular cross-sectional shape and rotatable retention means on the frame'at each end of said shaft holding said shaft rotatably on'the frame,

one of said bearing retention means comprising a stub' shaft rotatably mounted on the frame, a collar keyed tothe stub shaft, a shelf on the collar having a semicylindrioal interior surface for reception of one end of said rewind shaft, an aperature in said shelf and a plug on said rewind shaft engageable in the aperture whereby to secure said rewind shaft non-rotatably to said collar,

. a chuck jaw having one end pivotally secured to the shelf I at one side thereof, said chuck jaw having a semi-cylindrical interior surface complementary to the first semicylindrical surface, said chuck jaw being movable to'a closed position overlying said shelf, said shelf and said' chuck jaw having complementary semi cylindrical exterior surfaces forming in conjunction with each otherfa' cylindrical surface when the chuck jaw is closed, said collar having a cylindrical'exterior surface of the same diameter as the first cylindrical surface and in axial alignment therewith, a retainer ring having a released posi tion on said collar and movable axially to a releasable retaining position surrounding said shelf and said chuck jaw, and detent means adapted to hold said retainer ring respectively in released and retaining positions.

4. In a device for rewinding rolls of sheet material, a frame, a rewind shaft of circular cross-sectional shape and rotatable retention means on. the frame at each end of said shaft holding said shaft rotatably on the frame, one of said retention means comprising a stub shaft rotatably heldon the frame, a collar having a keyed connection to the stub shaft,- a flange means on said collar, a bushing-,onone end of said-shaft, a shelf on'the.

collar having a semi-cylindrical interior surface holding the bushing, an aperture in said shelf and a diametrically extending plug on said bushing receivable in said aperture whereby to secure said rewind shaft non-rotatably to said collar, a chuck jaw having one end pivotally secured to the shelf at one side thereof, said chuck jaw having a semi-cylindrical interior surface complementary to the first semi-cylindrical surface, said chuck jaw being movable to a closed position overlying said bushing, said shelf and said chuck jaw having complementary semi-cylindrical exterior surfaces forming in conjunction with each other a cylindrical surface when the chuck jaw is in a closed position, flange means on the free end of said cylindrical surface, flange means on said collar, said 6 collar having a cylindrical exterior surface of the same diameter as the first cylindrical surface and in axial alignment therewith, a retainer ring having a released position on said collar against said flange means thereon and movable axially to a releasable retaining position surrounding said shelf and said chuck jaw and against said flange means thereon, and resilient detent means having elements on said retainer ring and respectively on said collar and between said shelf and said chuck whereby 10 to hold said retainer ring respectively in released and retaining positions.

No references cited. 

